Reflector holder and the like



Aug. 20, 1929. P. M. HOTCHKIN REFLECTOR HOLDER AND THE LIKE Flled Apr1l 9 1928 .5 V nf'ar. R4411. HOTc'H/mv;

Patented Aug. 20, 1929.

.UNITED STATES PAUL M. HOTCHKIN, OF CHICAGO, ILLINOIS.

REFLECTOR HOLDER AND THE LIKE.

Application filed April 9, 1928.

My present invention relates to holders for reflectors, shades and the like, and ithas more specific reference to a combination or separable structure, one portion of which is mounted upon an electric socket and another portion of which is mounted upon the reflector or shade, whereby the socket and the reflector or shade are cooperatively connected together or assembled as a unit. The present structure is especially designed to permit the reflector or shade to be readily or quickly detached and removed from the socket by a slight rotative movement of one or the other, or both, of the assembled elements. The structural form of the coacting parts is such that the position of the reflector or shade may be reversed, or the angle at which the light is projected may be readily changed or altered whenever desired. In this connection I have provided the reflector or shade with a peculiarly shaped novel head or flange with which a specially formed clamping structure is cooperated, and the socket I have provided with an extremely simple but novel base-plate that is removably and adjustably engaged with spring members or yieldable tongues extending from the clamping structure on the reflector or shade. Numerous other objects are contemplated in providing the herein-disclosed reflector-holder or shade-holder; among which are, dependability and readiness of operation, durability of construction, simplicity and sturdiness in the formation and arrangement of the parts, accessibility for the purposes of adjustment, replacement or repair, and the entire holder is arranged, fabricated, and assembled in a novel and economical manner, which permits the article being placed upon the market for a reasonable price.

I prefer to carry out my invention, and to accomplish the numerous objects thereof, in substantially the manner hereinafter fully described and as more particularly pointed out in the claims, reference being herein made to the accompanying drawings that form a part of this specification.

In the drawings Fig. 1, is a side elevation of a socket and a portion of a shade or reflector in assembly, parts of the structure being broken away and in section.

Fig. 2, is. a view in elevation of the portion of the holder that is secured to the reflector or shade.

Serial No. 268,722.

Fig. 3, is a View in elevation of the portion of the holder that is mounted upon the socket.

Fig. 4, is a fragmentary view of the reflector portion of the holder looking at the iame at a right angle to the view shown in The drawings are schematic and are for the purpose of disclosing a typical or preferred manner of carrying out my invention and in said drawings similar reference characters have been employed to designate like parts wherever they appear through out the several views. The shade or reflector is conventionally illustrated by the part designated as A and the socket is conventionally shown by the part designated as B, and the parts of the holder are shown in separated form in Figs. 2-3 about to be assembled and mounted upon their respective elements.

The reflector or shade A has a cylindrical neck portion 5 that extends a suitable distance therefrom and is of the desired dimen sions to permit an electric bulb being insert ed through the neck and screwed into the socket. Intermediate its ends the neck is provided with large out-standing ribs or beads 6 that are of frustum-pyramidal shape in section and are preferably disposed opposite each other as will be seen in Figure 2 and are separated from each other by substantially flat portions 7. At one side of one of the ribs 6 there is an embossment 8 on the neck, the purpose of which, as will hereinafter appear, is to provide a stop or abutment to avoid rotational movement of the reflector in the attached portion of the holder.

The part of the holder that is mounted upon the reflector or shade consists of a pair of semi-cylindrical metal segments 9 that together form a circular member surrounding the reflector neck. Each segment is provided with out-standing concentric ribs or beads 11 that are shaped as counter-parts of the ribs 6 on the reflector neck so that they will coact with the latter when the parts are in assembly, and at the flattened portions of the ribs on the neck the holder ribs are correspondingly flattened as at 12 so, as to separate the ribs (see Figure l). The segments 9 are each provided with a pair of adjacent parallel slots 13 that extend in wardly from their outer edges at approximately the ends of the flattened portions 12 of the ribs thus providing spring lugs 10.

The outer portions of the lugs are bent into lateral flanges 14 as clearly shown in Figs. 2 and 4 that have their outer ends turned back as at 15 to provide hook-shaped elements in which there is a channel or groove 16. The remaining portions of the segments between the ends thereof and the slots 13 have laterally extending flanges 17 the edges of which are bent to provide the rims 18 that act as retainers or guides for the coacting portion of the other member of the holder that is secured to the socket. By forming the ribs or beads 11 and the flanges 14 and 17 in the manner shown a relatively deep groove 19 is provided in the outer surfaces of the segments to receive the split clamping band 20 that has apertured ears 21 through which a clamping screw or bolt 22 is passed and tightened to clamp the segments upon the reflector neck. As will be seen in Fig. 1 the end portions of the seg ments 9. adjacent the abutment 8 are cut away as at 23 so as to engage the ends of the abutment and thereby prevent any rotational movement of the segments in the event the clamping ring 20 should accidentally become loosened.

The socket B is of commercial form hav ing the metal cap 23 with its screw lugs 24 flanged therefrom and the porcelain member 25 is connected thereto by the screws 26.

Surrounding the outer cylindrical portion 27 of the porcelain member is an annulus 28 or flat ring of slightly less diameter than the diametric distance between the rims 18 of the reflector portion of the holder so that when the annulus is placed with its face against the flanges 17 of the segments the perimeter of the annulus will be just within the rims 18 making a snug fit. The central aperture 29 of the annulus is of greater diameter than the socket portion 27 of the porcelain, as seen in Figure 3 and said annulus is secured to the socket structure by means of the same screws or bolts 26 that connect the porcelain member 25 to the metal cap 23 At the diametrically opposite portions the edge of the annulus is provided with cut away recesses 30 that extend around the perimeter a distance slightly greater than the width of the spring lugs 14, and said recesses are of a depth greater than the turned back ends 15 of said lugs. As will be ob served in Fig. 3 the recesses 30 are off-set with respectto the attaching screws and the screw lugs of the porcelain member and metal cap.

WVhen the parts of the holder are about to be assembled the reflector member is placed against the annulus 28 with the spring lugs 14 and their turned back portions 15 in registration with the recesses 30, in which position the face of the annulus will be flat against the flanges 17 of the segments and the perimeter of the annulus will be inside the rims 18. Then by giving the parts a relative rotative movement the perimeter of the annulus will enter the channels 16 of the spring lugs 14 and thereby effect a positioning of the members so that they do not become accidentally separated. For convenience the ends of the recesses 30 may be curved or oblique, which permits a slight wed 'ing action and a yielding of the spring lugs during the rotative movement of the members when being assembled. The disposition of the spring lugs 14 and the recesses 30 is such that the shade or reflector may be removed from the socket and its position readily reversed whenever desired, and it is also possible, by continuing the rotative movement, to direct the reflected light rays at any desired angle from the socket so that the direction of the illumination may be controlled.

It is obvious that modifications of this device are contemplated and the specific structure herein shown may be altered as desired. The foregoing detailed description and drawings have been given for the purpose of clearness of understandingonly, and no unnecessary limitations should be understood therefrom, but the appended claims should be construed as broadly as permissible in view of the prior art.

What I claim is '1. A device of the kind described comprising an encircling structure adapted to be clamped to a reflector or shade, radial lugs projecting therefrom and having turnedback ends to provide inwardly facing channels, and an annulus positioned flat against said lugs, the peripheryof said annulus being notched to permit initial engagement of the annulus with the lugs, whereby a relative rotative movement between the parts causes the periphery of the annulus to enter the channel to interlock said parts.

2. A device of the kind described comprising an encircling structure having an annular flange that is formed into a lateral rim along its edge, L-shaped lugs projecting from said structure and having reversely bent ends that interrupt said rim and. provide inwardly opening channels, and a substantially flat annulus having a notched periphery to permit the annulus to pass the reverse bends of the lugs in movement towards and away from the encircling struc ture and whereby a relative rotational movement between the annulus and encircling structure causes the periphery of the former to enter said channels and interlock said parts. a

3. A holder for reflectors and the like comprising separable members one of which consists of an encircling structure having radially disposed flanges that are provided with annular rims, yieldable lugs interposed etween said flanges having inwardly facing channels in their outer ends that interrupt the rims of said flanges, the other member of said holder consisting of a flat disk-like element fitted within said rims and having notched edge portions correspondingly located with respect to channeled portions of the lugs to permit initial assembly of the members, whereby a rotative relative movement between the members enters the edge of the disk-like element into the channels of the lugs.

4. A device of the kind described comprising separable members adapted to be mounted respectively upon an electric socket and a reflector, the reflector member consisting of a split cylindrical element having outstanding ribs with flattened portions between the ribs, and channeled lugs projecting beyond said ribs, the other member consisting of a notched disk interlocked with the lugs of the first member by a relative rotative movement; in combination with a reflector having a cylindrical neck, outstanding ribs extending around opposite portions of said neck and flattened portions between the ends of said ribs coacting with the holder ribs and flattened portions, and a band for drawing the parts of the split cylindrical elements together upon the reflector neck.

Signed at Chicago, in the county of Cook and State of Illinois, this 4th day of April, 1928.

PAUL M. HOTCHKIN. 

